The invention relates to medicine and medical equipment, namely to traumatology, orthopedics, and also neurosurgery, and directed on creation of lung in handling, convenient in use of axial rod, providing for changing its cross-diameter at transpedicular fixation of vertebral column, when involved vertebrae different departments and size, require different field by value of pedicle screws.This is achieved by the fact, that this utility model is presented by an axial rod, having metal case with recess, which is preliminary crimps (in particular surgical clamp), which creates displacement of its diametrically opposite edges by recess of the and thus locally forms smaller diameter, corresponding to a specific head screw.This utility model can be used in surgical practice, in particular at operations on optimal realization transpedicular fixation of pathological section on adjacent levels of vertebral column.